Arnd, >re "no problem to solve":
This should be considered as a "political statement", but the truth is that _authentication_ is the major security application since at least 30 years back. >I wouldn't suggest to introduce digital signatures in areas where you can >live well without. But I think I get about one signed document per day, and >sign about one. I believe that some day we should be able to save costs by >doing that electronically. Server-signatures is a snap. Go to https://buyer.x-obi.com/BuyerASP/buyer and try out OBI (Open Buying on the Internet) Express, by signing purchase orders, and receive signed invoices after a short registration procedure. But client-signatures require things that are not affordable, standardized, and generably available. Regards Anders Rundgren
